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A CAMAC and FASTBUS Engineering Test Environment Supported by a MicroVAX/MicroVMS System

Description: A flexible, multiuser engineering test environment has been established for the engineers in SLAC's Electronic Instrumentation Engineering group. The system hardware includes a standard MicroVAX II and MicroVAX I with multiple CAMAC, FASTBUS, and GPIB instrumentation buses. The system software components include MicroVMS licenses with DECNET/SLACNET, FORTRAN, PASCAL, FORTH, and a versatile graphical display package. In addition, there are several software utilities available to facilitate FASTB… more
Date: October 1, 1987
Creator: Logg, C.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Microcomputer analysis of regenerative heat exchangers for oscillating flow

Description: Regenerative heat exchangers for use in oscillating flows such as those occurring in Stirling engines present considerable analytical problems to the thermal engineer. A simplified finite element analysis has been implemented in a spreadsheet, providing improved access to analytical assumptions and allowing parametric analysis of current heat transfer data. In addition, an irreversibility analysis has been implemented using the thermal and friction results in the spreadsheet. It is suited for e… more
Date: March 1, 1987
Creator: Hutchinson, R. A. & Lyke, S. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Applications of a downhole programmable microprocessor for a geothermal borehole inspection tool

Description: The high-temperature scanning borehole inspection system is currently being developed jointly by the Los Alamos National Laboratory (LANL) and Westfalische Berggewerkschaftskasse (WBK) of West Germany. The downhole instrument is a digital televiewer that utilized a microprocessor to digitize, process and transmit the acoustic information to the surface acquisition and control system. The primary operation of the downhole acoustic assembly uses a piezoelectric crystal acting as a receiver-transm… more
Date: January 1, 1987
Creator: Jermance, R. L.; Moore, T. K.; Archuleta, J. & Hinz, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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GOLD: Integration of model-based control systems with artificial intelligence and workstations

Description: Our experience with model-based accelerator control started at SPEAR. Since that time nearly all accelerator beamlines have been controlled using model-based application programs, for example, PEP and SLC at SLAC. In order to take advantage of state-of-the-art hardware and software technology, the design and implementation of the accelerator control programs have undergone radical changes with time. Consequently, SPEAR, PEP and SLC all use different control programs. Since many of these applica… more
Date: August 1, 1987
Creator: Lee, M. & Clearwater, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The impact of new computer technology on accelerator control

Description: This paper describes some recent developments in computing and stresses their application in accelerator control systems. Among the advances that promise to have a significant impact are (1) low cost scientific workstations; (2) the use of ''windows'', pointing devices and menus in a multi-tasking operating system; (3) high resolution large-screen graphics monitors; (4) new kinds of high bandwidth local area networks. The relevant features are related to a general accelerator control system. Fo… more
Date: April 1, 1987
Creator: Theil, E.; Jacobson, V. & Paxson, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Toward automated beam optics control

Description: We have begun a program aiming toward automatic control of charged-particle beam optics using artificial intelligence programming techniques. In developing our prototype, we are working with LISP machines and the KEE expert system shell. Our first goal was to develop a ''mouseable'' representation of a typical beam line. This responds actively to changes entered from the mouse or keyboard, giving an updated display of the beam line itself, its optical properties, and the instrumentation and con… more
Date: January 1, 1987
Creator: Silbar, R.R. & Schultz, D.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The performance of minisupercomputers: Alliant, Convex, and SCS (Scientific Computer Systems)

Description: Recently several computers have appeared whose architectures feature many, if not all, of the characteristics of supercomputers, but whose electronic technology uses less expensive and more readily available components. Such machines have been labeled ''minisupercomputers.'' Currently, this class of computers includes those manufactured by Convex, Alliant, and Scientific Computer Systems (SCS). The strategy of these minisupercomputer vendors is to produce a machine that may not provide as much … more
Date: January 1, 1987
Creator: Wasserman, H. J.; Simmons, M. L. & Lubeck, O. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comparison of existing and proposed HEP (High Energy Physics) data acquisition systems and their suitability for RHIC

Description: In this note, a summary of data acquisition systems is presented for the High Energy Physics collider facilities. Particular emphasis is made on the data acquisition stages and trigger rates. The suitability of these systems for a relativistic heavy ion collider calorimeter detector with ports is then discussed. 6 refs., 8 figs., 1 tab. (LSP)
Date: January 1, 1987
Creator: Sunier, J. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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GOLD: Integration of model-based control systems with artificial intelligence and workstations

Description: Our experience with model based accelerator control started at SPEAR. Since that time nearly all accelerator beam lines have been controlled using model-based application programs, for example, PEP and SLC at SLAC. In order to take advantage of state-of-the-art hardware and software technology, the design and implementation of the accelerator control programs have undergone radical change with time. Consequently, SPEAR, PEP, and SLC all use different control programs. Since many of these applic… more
Date: August 1, 1987
Creator: Lee, M. & Clearwater, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of a repeating pneumatic pellet injector for the Joint European Torus

Description: A three-barrel pneumatic pellet injector has been developed for plasma fueling of the Joint European Torus (JET). The versatile device consists of three independent machine-gun-like mechanisms that operate at cryogenic temperatures (14/sup 0/K to 20/sup 0/K). Individual high speed extruders provide a continuous supply of solid deuterium to each gun assembly, where a reciprocating breech-side cutting mechanism forms and chambers cylindrical pellets from the extrusion; deuterium pellets are then … more
Date: January 1, 1987
Creator: Milora, S. L.; Combs, S. K.; Baylor, L. R.; Sparks, D. O.; Foust, C. R. & Gethers, F. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A programmable finite state module for use with the Fermilab Tevatron Clock

Description: A VME module has been designed which implements several programmable finite state machines that use the Tevatron Clock signal as inputs. In addition to normal finite state machine type outputs, the module, called the VME Finite State Machine, or VFSM, records a history of changes of state so that the exact path through the state diagram can be determined. There is also provision for triggering and recording from an external digitizer so that samples can be taken and recorded under very precisel… more
Date: October 1, 1987
Creator: Beechy, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Updated overview of the Tevatron control system

Description: A single unified control system is used for all of the Fermilab accelerators and storage rings, from the LINAC to the Tevatron and antiproton source. A review of the general features is given - these include a 'host' system consisting of a number of minicomputers integrated with many distributed microprocessors in a variety of subsystems, usage of an in-house developed protocol, GAS, for communication between the two classes of machines, and a Parameter Page program, designed in conjunction wit… more
Date: October 1, 1987
Creator: Lucas, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experience of developing an integrated nondestructive assay system

Description: A consortium of national laboratories is collaborating with the Savannah River Plant to develop an integrated system of state-of-the-art nondestructive assay (NDA) instrumentation to provide nuclear materials accounting and process control information for a new plutonium scrap recovery facility. Individual microcomputer-based instruments report assay results to an instrument control computer (ICC). The ICC, in turn, is part of a larger computer network that includes computers that perform proce… more
Date: January 1, 1987
Creator: Hsue, S.T. & Baker, M.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A segmented calorimeter for low-energy particle beams in space

Description: We describe a segmented calorimeter for determining the spatial intensity distribution of a neutral particle beam. Our instrument for a 1-MeV H/sup 0/ beam consists of a 5 x 5 array of boron nitride (BN) blocks, each block 0.975 cm by 0.975 cm by 0.053 cm thick, glued onto a polyimide printed circuit board. The temperature sensor behind each block is a special integrated circuit (AD590). The sensor data are multiplexed into an IBM AT computer for laboratory testing or into a telemetry system an… more
Date: October 1, 1987
Creator: Barron, M. H.; Gallagher, T. O.; Goulding, C. A.; Hedges, R. O.; Henneke, K. M.; Moss, C. E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The MEGA data acquisition system

Description: The MEGA experiment will acquire 3 MB/sec of data into a 9-crate Fastbus system controlled by a single Fastbus master. A second-level trigger will be implemented in a Fermilab Advanced Computer Program (ACP) farm of 32 Motorola 68020 microprocessors. Output from the ACP farm at a rate of 24 KB/sec will be sent to a MicroVAX II for taping. 16 refs.
Date: January 1, 1987
Creator: Oothoudt, M. A.; Amann, J. F.; Bolton, R. D.; Hughes, E. B.; Jui, C. C. H.; Cooper, P. S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Engineering tradeoffs in miniaturization of electronics for very large detectors

Description: The trend toward Application-Specific Integrated Circuits and similar systems-on-a-chip-technologies is fueling a new wave of innovation in detector electronics, just in time to address some of the problems being introduced by detectors which will approach a million channels of electronics. The cost-effectiveness of these technologies can be easily demonstrated, and the trend of the past twenty years of achieving more powerful electronics at a lower per-channel cost should receive a major impet… more
Date: October 1, 1987
Creator: Larsen, R.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Generic device controller for accelerator control systems

Description: A new distributed intelligence control system has become operational at the AGS for transport, injection, and acceleration of heavy ions. A brief description of the functionality of the physical devices making up the system is given. An attempt has been made to integrate the devices for accelerator specific interfacing into a standard microprocessor system, namely, the Universal Device Controller (UDC). The main goals for such a generic device controller are to provide: local computing power; f… more
Date: January 1, 1987
Creator: Mariotti, R.; Buxton, W.; Frankel, R. & Hoff, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The SLC control system - status and development

Description: The SLC control system is installed and operational in the full SLC through the Linac, Damping Rings, Positron Source, Arcs and Final Focus. The system now includes a host VAX 11/785, a development VAX 11/780, 4 VAX workstations, a distributed network of 70 microprocessors, and about 270 Camac crates with more than 4000 modules. The micros are used for control and monitoring of the hardware, for pulse-to-pulse feedback, and for consoles (COWs). High level model-driven host software provides a v… more
Date: March 1, 1987
Creator: Phinney, N. & Shoaee, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sandia programs relevant to microelectronics fabrication

Description: This report was prepared for the Semiconductor Industry and the National Laboratories Workshop held at the National Academy of Sciences, Washington, DC, February 24, 1987. It details the current Sandia program activities relevant to microelectronics fabrication.
Date: April 1, 1987
Creator: Picraux, S. T.; Vook, F. L. & Gregory, B. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Feedback systems in the SLC

Description: Two classes of computer-controlled feedback have been implemented to stabilize parameters in subsystems of the SLC: (1) ''slow'' (time scales approx. minutes) feedback, and (2) ''fast'', i.e., pulse-to-pulse, feedback. The slow loops run in a single FEEDBACK process in the SLC host VAX, which acquires signals and sets control parameters via communication with the database and the network of normal SLC microprocessors. Slow loops exist to stabilize beam energy and energy spread, beam position an… more
Date: February 1, 1987
Creator: Thompson, K.A.; Jobe, R.K.; Johnson, R. & Phinney, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Prescriptive concepts for advanced nuclear materials control and accountability systems

Description: Networking- and distributed-processing hardware and software have the potential of greatly enhancing nuclear materials control and accountability (MC and A) systems, from both safeguards and process operations perspectives, while allowing timely integrated safeguards activities and enhanced computer security at reasonable cost. A hierarchical distributed system is proposed consisting of groups of terminal and instruments in plant production and support areas connected to microprocessors that ar… more
Date: June 1, 1987
Creator: Whitty, W. J.; Strittmatter, R. B.; Ford, W.; Tisinger, R. M. & Meyer, T. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Two-stage hybrid microcircuit amplifier

Description: This report documents the design, development, and fabrication of a two-stage amplifier operating at 400 to 600 MHz. Included are characterization data, predictions generated during design, and measured performance.
Date: April 1, 1987
Creator: Pyo, M.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Proceedings of the workshop on new solid state devices for high energy physics. [LBL, October 28-30, 1985]

Description: This paper contains articles on semiconductor devices used in the detection of high energy particles. Some articles reported: Position sensitive semiconductor devices; Scintillation techniques and optical devices; Radiation damage to detectors; VLSI for physics; and experience with Si detectors in NA32. (LSP)
Date: December 1, 1987
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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